Automatic driving steering wheel driving device and driving system

Abstract

The invention provides an automatic driving steering wheel driving device which comprises a driving disc, a driving mechanism and a connecting piece, and the driving disc is provided with a plurality of transmission teeth distributed along the circumference of the driving disc; the driving mechanism comprises a gear and a driving part, and the gear is connected to an output shaft of the driving part through a transmission structure; the gear is in meshing transmission with the transmission teeth, so that the driving disc rotates in the circumferential direction; the connecting piece is used for detachably connecting the driving disc to the steering wheel body. The driving mechanism has the advantages that the stable roller, the lifting roller and the auxiliary roller enable the driving mechanism and the driving disc to be connected more stably and to be in rolling friction with the driving disc, the driving disc rotates more stably and smoothly, driving is more sensitive, and driving safety, testing efficiency and testing consistency are improved; the driving disc is sleeved in from the front of the steering wheel body, the driving mechanism is detachably connected with the driving disc, disassembly and assembly are easy, the driving device can be assembled and disassembled without disassembling the steering wheel, and the driving device is installed behind the steering wheel body.

Description

Technical Field

[0001] The present invention relates to the field of automobile steering wheel drive technology, and in particular to an automatic driving steering wheel drive device and a drive system. Background Art

[0002] Automobile testing is an essential part of vehicle model development. The current main method is for testers to drive test vehicles and conduct various performance, durability, handling and other tests in accordance with test standards. There are problems in safety, test efficiency and test consistency. For example: high-speed test conditions and extreme driving conditions in handling tests pose driving safety risks; repeated bad roads and enhanced road conditions in durability tests cause testers to become fatigued, affect work efficiency, and endanger their health; performance tests require precise control of the vehicle, and it is difficult for testers to be completely consistent in each test. The use of autonomous driving, replacing and eliminating human testers with autonomous driving systems, and realizing test automation can effectively improve the above problems.

[0003] In order to realize automatic driving, existing vehicles need to use a drive device to control the left and right steering wheels separately. However, most drive devices are generally set in front of the steering wheel, which has certain safety hazards. In addition, in order to ensure driving safety during long-term use, the drive part of the drive device usually needs to be maintained. However, the existing drive device cannot disassemble the drive part separately, and the disassembly and assembly of the entire mechanism is not fast enough, which leads to a cumbersome maintenance process. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an automatic driving steering wheel drive device, in which a driving wheel is detachably connected to a steering wheel body through a connecting piece, and the driving wheel is driven to rotate by meshing transmission between the gear and the transmission teeth of the driving wheel, thereby driving the steering wheel body to rotate.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] An automatic driving steering wheel drive device comprises a drive plate, a drive mechanism and a connecting piece, wherein the drive plate is provided with a plurality of transmission teeth distributed along its circumference; the drive mechanism comprises a gear and a drive component, and the gear is connected to the output shaft of the drive component through a transmission structure; the gear and the transmission teeth are meshed and transmitted to rotate the drive plate in its circumferential direction; the connecting piece is used to detachably connect the drive plate to the steering wheel body.

[0007] Furthermore, the driving mechanism also includes a first bracket, the first bracket is provided with a lifting roller and a stabilizing roller rotatably connected to the first bracket, the lifting roller abuts against the outer wall of the driving disk, the stabilizing roller abuts against the inner wall of the driving disk, and the axes of the lifting roller and the stabilizing roller are parallel to the axis of the driving disk; the first bracket is provided with an avoidance hole, and the transmission shaft of the transmission structure passes through the avoidance hole and is connected to the gear, thereby increasing the connection stability between the driving mechanism and the driving disk.

[0008] Furthermore, the first bracket is provided with a first accommodating hole, a slide groove extending radially along the driving disk is provided in the first accommodating hole, a slider is provided for sliding cooperation with the slide groove, and the stabilizing roller is rotatably connected to the slider; a first spring is provided between the slider and the hole wall at the top of the slide groove to push the slider to move in a direction away from the center of the driving disk, so that the first bracket is stably stuck on the driving disk.

[0009] Furthermore, a support rod is arranged on the outer side of the first bracket to support the first bracket.

[0010] Furthermore, the driving mechanism also includes a second bracket, an adjusting screw and an auxiliary support rod, the second bracket and the first bracket are arranged relative to the center of the driving disk; the second bracket is provided with an auxiliary roller rotatably connected to the second bracket, the auxiliary roller abuts against the outer wall of the driving disk, and the axis of the auxiliary roller is parallel to the axis of the driving disk; the first bracket is provided with a first threaded hole and a first through hole, the first end of the adjusting screw is rotatably connected to the second bracket, and the second end is threadedly connected to the first threaded hole; the first end of the auxiliary support rod is fixedly connected to the second bracket, and the second end passes through the first through hole and is gap-matched with the first through hole; the adjusting screw and the auxiliary support rod are arranged in parallel, so that the connection between the driving mechanism and the driving disk is more stable, and the rotation process of the driving disk is more stable.

[0011] Furthermore, the first end of the auxiliary support rod is provided with an external thread, and the second bracket is provided with a second threaded hole compatible with the external thread, the first through hole is a long hole extending along the circumferential direction of the driving disk, and the second threaded holes are multiple holes arranged along the circumferential direction of the driving disk, so as to adjust the distance between the auxiliary support rod and the adjusting screw rod to adapt to steering wheels and steering columns of different sizes.

[0012] Furthermore, the size of the driving disc is larger than the size of the steering wheel body; preferably, the front surface of the driving disc is provided with an auxiliary handle arranged opposite to it.

[0013] Furthermore, the connecting member includes a connecting plate and a clamping plate, the first end of the connecting plate is connected to the driving disk, and the second end of the connecting plate extends toward the center of the driving disk; the connecting plate is provided with a second through hole and a third through hole distributed in its extension direction; the first end and the second end of the clamping plate pass through the second through hole and the third through hole respectively, and an accommodating channel for the steering wheel body to pass through is formed between the clamping plate and the connecting plate, so as to facilitate fixing the driving disk to the steering wheel body.

[0014] Furthermore, the first end of the card plate is provided with a plurality of limit grooves, and the second end of the card plate is provided with a pull block, the size of the pull block is larger than the size of the third through hole; the driving disk is provided with a second accommodating hole that penetrates the driving disk and extends radially along the driving disk, and a positioning column is provided in the second accommodating hole, the first end of the positioning column can extend out of the driving disk, and the second end of the positioning column is provided with a limit block, and the limit block can be inserted into the limit groove; a partition is fixedly provided in the second accommodating hole, and a second spring is sleeved on the positioning column, the first end of the second spring abuts against the partition, and the second end abuts against the limit block, so that the driving disk is firmly fixed to the steering wheel body, and disassembly and assembly are convenient and quick.

[0015] Furthermore, an autonomous driving steering wheel drive system includes the autonomous driving steering wheel drive device described above, and also includes a controller and a signal acquisition module, the signal acquisition module includes an external environment information recognition module and a vehicle status information recognition module, the signal acquisition module and the drive component are both electrically connected to the controller; the controller includes an information comparison module for comparing the vehicle's current position and the target position.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The stabilizing roller, lifting roller and auxiliary roller make the connection between the driving mechanism and the driving disc more stable, which can prevent the driving mechanism from deviating; and the stabilizing roller, lifting roller and auxiliary roller roll and rub against the driving disc, which has small friction, making the driving disc rotate more stably and smoothly, and the driving more sensitive, thereby improving driving safety, test efficiency and test consistency.

[0018] (2) The drive wheel is inserted from the front of the steering wheel body, and the drive mechanism is detachably connected to the drive wheel. The assembly and disassembly are simple, and the installation and disassembly of the drive device can be completed without removing the steering wheel, thereby realizing the installation of the drive device behind the steering wheel body.

[0019] (3) Through the cooperation of the stabilizing roller, the lifting roller, the auxiliary roller and the adjusting screw, the drive mechanism and the drive disc can be quickly disassembled and assembled, saving time when replacing or maintaining the drive mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the front structure of the automatic driving steering wheel drive device of the present invention.

[0021] Figure 2 It is a schematic diagram of the rear structure of the automatic driving steering wheel drive device of the present invention.

[0022] Figure 3 It is a schematic diagram of the driving mechanism structure of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the AA cross-sectional view of the driving mechanism of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the connecting piece of the present invention.

[0025] Figure 6 It is a schematic structural diagram of the BB cross-sectional view of the connecting piece of the present invention.

[0026] In the figure: 1-driving plate; 11-transmission tooth; 12-auxiliary grip; 2-driving mechanism; 21-gear; 22-transmission shaft; 23-first bracket; 231-lifting roller; 232-stabilizing roller; 233-avoidance hole; 234-slider; 235-first spring; 236-support rod; 237-first threaded hole; 238-first through hole; 24-second bracket; 241-auxiliary roller; 25-adjusting screw rod; 251-knob; 26-auxiliary support rod; 3-connecting piece; 31-connecting plate; 311-second accommodating hole; 312-partition plate; 313-fourth through hole; 32-card plate; 321-limiting groove; 322-pull block; 33-positioning column; 331-limiting block; 34-second spring; 4-steering wheel body. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In the description of the present invention, it should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, it should be noted that the terms "front", "rear", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the product of the invention is usually placed when in use, or the directions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0029] The present invention provides an automatic driving steering wheel driving device, Figure 1 and Figure 2 As shown, it includes a driving disc 1, a driving mechanism 2 and a connecting member 3. The driving disc 1 is provided with a plurality of transmission teeth 11 distributed along its circumference; the driving mechanism 2 includes a gear 21 and a driving component, and the gear 21 is connected to the output shaft of the driving component through a transmission structure; the gear 21 is meshed with the transmission teeth 11 to transmit the driving disc 1 in its circumferential direction; the connecting member 3 is used to detachably connect the driving disc 1 to the steering wheel body 4. The driving disc 1 is an annular structure, including a connecting portion at the front of the driving disc 1 and a transmission portion at the rear of the driving disc 1. The connecting portion and the transmission portion can be arranged in an integrated manner, or they can be arranged in a split manner and then fixedly connected by welding, screwing, clamping, etc., which is convenient for processing. Preferably, the connecting member 3 is arranged at the connecting portion at the front of the driving disc 1 to connect the front of the driving disc 1 to the steering wheel body 4, and the transmission teeth 11 are arranged on the inner wall of the transmission portion at the rear of the driving disc 1 to form a gear ring. When the steering wheel is turned, the driving component drives the gear 21 to rotate through the transmission structure, and then drives the driving disc 1 to rotate through the gear 21, and then drives the steering wheel body 4 to rotate through the driving disc 1, thereby realizing the steering of the steering wheel body 4.

[0030] refer to Figure 1-Figure 4 As shown, in order to increase the connection stability between the driving mechanism 2 and the driving disc 1, the driving mechanism 2 further includes a first bracket 23, the first bracket 23 is provided with a lifting roller 231 and a stabilizing roller 232 rotatably connected to the first bracket 23, the lifting roller 231 abuts against the outer wall of the driving disc 1, the stabilizing roller 232 abuts against the inner wall of the driving disc 1, and the axes of the lifting roller 231 and the stabilizing roller 232 are parallel to the axis of the driving disc 1. Preferably, the driving component is set as a motor, the motor is placed on the floor of the cab through a support frame, the input end of the transmission structure is connected to the output shaft of the motor, and the output end of the transmission structure is connected to the gear 21. The transmission structure includes a transmission shaft 22, and an avoidance hole 233 can be set on the first bracket 23, and the transmission shaft 22 passes through the avoidance hole 233 and is connected to the gear 21. For safety protection and dust prevention, a protective shell can be set outside the transmission structure and the driving component. The first bracket 23 can be clamped on the driving disc 1 through the lifting roller 231 and the stabilizing roller 232. In order to firmly and stably clamp and prevent deviation, the lifting roller 231 and the stabilizing roller 232 can be set to multiple; preferably, the lifting roller 231 and the stabilizing roller 232 are set to two, respectively arranged at the two ends of the first bracket 23. The connection stability between the driving mechanism 2 and the driving disc 1 is increased, thereby avoiding the problem that the steering wheel body 4 cannot adjust the direction in time due to the falling off between the driving mechanism 2 and the driving disc 1 during operation, so that the driving device drives the steering wheel body 4 more reliably, and the user is safer when using it.

[0031] Preferably, if Figure 4As shown, the first bracket 23 is provided with a first receiving hole, and a sliding groove extending radially along the driving disk 1 is provided in the first receiving hole, and a slider 234 is provided in the sliding groove for sliding cooperation, and the stabilizing roller 232 is rotatably connected to the slider 234; a first spring 235 is provided between the slider 234 and the hole wall at the top of the sliding groove, pushing the slider 234 to move in a direction away from the center of the driving disk 1. The first spring 235 is in a compressed state, and under the action of the first spring 235, the slider 234 moves along the sliding groove in a direction away from the center of the driving disk 1, driving the stabilizing roller 232 to move in a direction away from the center of the driving disk 1, so that the stabilizing roller 232 can press against the inner wall of the driving disk 1, so that the first bracket 23 can be stably clamped on the driving disk 1 through the lifting roller 231 and the stabilizing roller 232. When the driving disk 1 rotates, it rotates between the stabilizing roller 232 and the lifting roller 231. The stabilizing roller 232 and the lifting roller 231 also rotate at the same time, rolling and rubbing with the driving disk 1. The friction force is small, and the driving disk 1 rotates more stably and smoothly. Preferably, the stabilizing roller 232 can be connected to the slider 234 through the first bearing, and the lifting roller 231 can be connected to the first bracket 23 through the second bearing. The distance between the stabilizing roller 232 and the lifting roller 231 can also be adjusted by the first spring 235 to adapt to driving disks 1 with different wall thicknesses. By adjusting the compression state of the first spring 235, or selecting the first spring 235 with different elastic forces, the pressing force of the stabilizing roller 232 can also be adjusted, so that the first bracket 23 can be clamped on the driving disk 1, and at the same time, the driving disk 1 can be kept rotating smoothly. Preferably, the first receiving hole is set as a rectangular hole, which can be a through hole or a blind hole. When the first receiving hole is a through hole, the slide groove can be set on the side wall, and when the first receiving hole is a blind hole, the slide groove can be set on the side wall or the bottom wall. In order to fix the first spring 235 firmly, a first protrusion can be set on the hole wall opposite to the slider 234, and a second protrusion can be set on the slider 234, and the two ends of the first spring 235 are respectively sleeved on the first protrusion and the second protrusion.

[0032] In order to further support the first bracket 23, a support rod 236 is further provided on the outer side of the first bracket 23, and the free end of the support rod 236 can be abutted against the cab floor or the middle channel. Preferably, the support rod 236 and the first bracket 23 can be universally connected to adjust the position of the support rod 236.

[0033] refer to Figure 2 and Figure 3As shown, the driving mechanism 2 further includes a second bracket 24, an adjusting screw rod 25 and an auxiliary support rod 26. The second bracket 24 and the first bracket 23 are arranged opposite to each other relative to the center of the driving disk 1. The second bracket 24 is provided with an auxiliary roller 241 rotatably connected to the second bracket 24. The auxiliary roller 241 abuts against the outer wall of the driving disk 1, and the axis of the auxiliary roller 241 is parallel to the axis of the driving disk 1. Specifically, a long hole can be provided in the middle of the second bracket 24, and the auxiliary roller 241 is rotatably connected to the long hole through a rotating shaft, so that the auxiliary roller 241 and the driving disk 1 are rolled and rubbed. In this way, the driving mechanism 2 is clamped on both sides of the driving disk 1 by the lifting roller 231, the stabilizing roller 232 and the auxiliary roller 241, so that the connection between the driving mechanism 2 and the driving disk 1 is more stable, the rotation process of the driving disk 1 is more stable, and the driving mechanism 2 is connected to one side of the driving disk 1, which prevents the driving disk 1 from deviating when rotating. Meanwhile, the stabilizing roller 232, the lifting roller 231 and the auxiliary roller 241 can all rotate with the driving disk 1 and rub against the rollers of the driving disk 1, so that the driving disk 1 can rotate smoothly and drive sensitively. Preferably, the first bracket 23 and the second bracket 24 can be set to an arc shape.

[0034] In order to facilitate the adjustment of the position of the auxiliary roller 241, the first bracket 23 is provided with a first threaded hole 237 and a first through hole 238. The first end of the adjusting screw rod 25 is rotatably connected to the second bracket 24, and the second end is threadedly connected to the first threaded hole 237. For example, the first end of the adjusting screw rod 25 can be connected to the second bracket 24 through a third bearing. The first end of the auxiliary support rod 26 is fixedly connected to the second bracket 24, and the second end passes through the first through hole 238 and is clearance-matched with the first through hole 238; the adjusting screw rod 25 is arranged in parallel with the auxiliary support rod 26. For example, the first end of the auxiliary support rod 26 can be provided with an external thread, and a second threaded hole can be provided on the second bracket 24, and the first end of the auxiliary support rod 26 can be threadedly connected and fixed to the second bracket 24. The length of the adjusting screw 25 between the first bracket 23 and the second bracket 24 can be adjusted by rotating the adjusting screw 25, thereby adjusting the position of the second bracket 24, thereby adjusting the distance between the auxiliary roller 241 and the lifting roller 231, and adjusting the pressure of the auxiliary roller 241 and the lifting roller 231 clamping the driving disk 1. When disassembling the driving mechanism 2, the adjusting screw 25 is rotated to increase the distance between the auxiliary roller 241 and the lifting roller 231, so that the auxiliary roller 241 is separated from the driving disk 1, and then the stabilizing roller 232 is lifted upward, so that the driving disk 1 can be easily separated from the driving mechanism 2. When installing the driving mechanism 2, after the gear 21 is meshed with the transmission gear 11, the stabilizing roller 232 and the lifting roller 231 are respectively attached to the inner wall and the outer wall of the driving disk 1, and then the adjusting screw 25 is rotated to make the auxiliary roller 241 attached to the outer wall of the driving disk 1, so that the first bracket 23 and the second bracket 24 are fixed to the driving disk 1. Through the cooperation of the stabilizing roller 232, the lifting roller 231, the auxiliary roller 241 and the adjusting screw 25, the driving mechanism 2 and the driving disk 1 can be quickly disassembled and assembled, which saves time when replacing or maintaining the driving mechanism 2. In order to facilitate the rotation of the adjusting screw 25, preferably, a knob 251 can be provided on the adjusting screw 25 in threaded cooperation, and the adjusting screw 25 can be rotated by rotating the knob 251. The adjusting screw 25 can be passed through the first threaded hole 237, and the knob 251 can be screwed on the second end of the adjusting screw 25, or the knob 251 can be installed on the adjusting screw 25 between the first bracket 23 and the second bracket 24. The adjusting screw 25 is arranged in parallel with the auxiliary support rod 26. As the length of the adjusting screw 25 between the first bracket 23 and the second bracket 24 is adjusted, the auxiliary support rod 26 moves synchronously in the first through hole 238, and the distance between the first bracket 23 and the second bracket 24 is adjusted accordingly, so that the position of the second bracket 24 is adjusted smoothly to prevent the second bracket 24 from tilting and directly contacting the driving disk 1.

[0035] Preferably, the first end of the auxiliary support rod 26 is provided with an external thread, the second bracket 24 is provided with a second threaded hole adapted to the external thread, the first through hole 238 is a long hole extending along the circumferential direction of the driving disc 1, and the second threaded holes are multiple and arranged along the circumferential direction of the driving disc 1. According to the size of the steering wheel column, the first end of the auxiliary support rod 26 can be screwed into different second threaded holes, so as to adjust the distance between the auxiliary support rod 26 and the adjusting screw rod 25, so as to adapt to steering wheels and steering columns of different sizes.

[0036] In order to facilitate inserting the driving disc 1 into the steering wheel body 4 from the outside of the steering wheel body 4, the size of the driving disc 1 is larger than that of the steering wheel body 4. When the driving device is installed on the steering wheel body 4, the driving disc 1 is inserted into the steering wheel body 4 from the outside of the steering wheel body 4, and then the driving disc 1 and the steering wheel body 4 are fixedly connected using the connecting member 3, and then the driving mechanism 2 is installed on the driving disc 1 from the rear of the steering wheel body 4. Specifically, when installing the driving mechanism 2, the first bracket 23 is first clamped on the driving disc 1 through the lifting roller 231 and the stabilizing roller 232, so that the gear 21 is meshed with the transmission gear 11, and then the adjusting screw 25 and the auxiliary support rod 26 are respectively inserted into the first threaded hole 237 and the first through hole 238 from both sides of the steering column of the steering wheel, and the adjusting screw 25 is rotated until the auxiliary roller 241 fits the outer wall of the driving disc 1. When a knob 251 is provided on the adjusting screw 25 between the first bracket 23 and the second bracket 24, the adjusting screw 25 can be rotated by rotating the knob 251. When the knob 251 is arranged at the end of the adjusting screw 25, the adjusting screw 25 can be directly rotated first, so that the adjusting screw 25 passes through the first threaded hole 237, the knob 251 is screwed into the free end of the adjusting screw 25, and then the adjusting screw 25 is rotated by the knob 251. When disassembling, the reverse operation can be performed. When installing the driving mechanism 2, the adjusting screw 25 and the auxiliary support rod 26 can also be inserted from the first bracket 23 and then connected to the second bracket 24. The driving disc 1 is inserted from the front of the steering wheel body 4, and the driving mechanism 2 is detachably connected to the driving disc 1. The disassembly and assembly are simple, and the installation and disassembly of the driving device can be completed without disassembling the steering wheel, and the driving device can be installed behind the steering wheel body 4, avoiding the installation of the driving device in front of the steering wheel body 4, occupying the driver's space and affecting the operation.

[0037] Preferably, the front surface of the driving disc 1 is provided with a relatively arranged auxiliary handle 12, through which the user can know the current rotation range and can perform emergency manual control according to the current situation. Moreover, the operation can be performed in front of the steering wheel, which is convenient and quick to operate, thereby enhancing the safety performance of vehicle driving.

[0038] refer to Figure 1 , Figure 2 and Figure 5As shown, the connecting member 3 includes a connecting plate 31 and a clamping plate 32, wherein the first end of the connecting plate 31 is connected to the driving disk 1, and the second end of the connecting plate 31 extends toward the center of the driving disk 1; the connecting plate 31 is provided with a second through hole and a third through hole distributed in its extending direction; the first end and the second end of the clamping plate 32 pass through the second through hole and the third through hole respectively, and a receiving channel for the steering wheel body 4 to pass through is formed between the clamping plate 32 and the connecting plate 31. The driving disk 1 can be fixed to the steering wheel body 4 by clamping the steering wheel body 4 in the receiving channel. The connecting plate 31 can be integrally provided with the driving disk 1, or can be detachably connected to the driving disk 1, for example, the connecting plate 31 can be clamped or connected to the inner wall of the driving disk 1 by screws.

[0039] Specifically, Figure 6 As shown, the first end of the card plate 32 is provided with a plurality of limit grooves 321, and the second end of the card plate 32 is provided with a pull block 322, and the size of the pull block 322 is larger than the size of the third through hole; the driving disk 1 is provided with a second accommodating hole 311 that penetrates the driving disk 1 and extends radially along the driving disk 1, and a positioning column 33 is provided in the second accommodating hole 311, and the first end of the positioning column 33 can extend out of the driving disk 1, and the second end of the positioning column 33 is provided with a limit block 331, and the limit block 331 can be inserted into the limit groove 321; a partition 312 is fixedly provided in the second accommodating hole 311, and a second spring 34 is sleeved on the positioning column 33, and the first end of the second spring 34 abuts against the partition 312, and the second end abuts against the limit block 331.

[0040] The partition 312 is fixedly disposed in the second receiving hole 311 and can be integrally disposed with the drive disk 1. The partition 312 is provided with a fourth through hole 313. The positioning column 33 passes through the fourth through hole 313 and extends from one end of the second receiving hole 311 to the other end. When the drive disk 1 is fixed to the steering wheel body 4 through the connecting member 3, the positioning column 33 is pulled up, the first end of the card plate 32 is passed around the steering wheel body 4 and inserted into the second through hole, the first end of the card plate 32 is pulled out or the pull block 322 is pushed, and the steering wheel body 4 is clamped in the receiving channel between the card plate 32 and the connecting plate 31. Then, the positioning column 33 is released, and the limiting block 331 of the positioning column 33 is inserted into the limiting groove 321, thereby limiting the first end of the card plate 32 from being pulled out in the second through hole, and the drive disk 1 and the steering wheel body 4 are fixedly connected. Preferably, a plurality of limiting grooves 321 are provided at the first end of the clamping plate 32, and a plurality of clamping columns adapted to the limiting grooves 321 can be provided at the free end of the limiting block 331, so as to enhance the stability of the limiting and adapt to the steering wheel body 4 of different sizes. When the positioning column 33 is released, the first end of the positioning column 33 can directly extend out of the driving disk 1, so that the operator can grasp the positioning column 33 for convenient operation; for the sake of aesthetics, the positioning column 33 can also be flush with the outer surface of the driving disk 1 or located inside the driving disk 1, and when the limiting block 331 is lifted directly or by lifting the first end of the clamping plate 32, the positioning column 33 can extend out of the driving disk 1.

[0041] The second spring 34 is in a compressed state. When the positioning column 33 is released, the second spring 34 can push the limit block 331 in the direction of the limit slot 321, which can speed up the installation speed of the operator. The second spring 34 continuously applies pressure to press the limit block 331 in the direction of the limit slot 321, so that the limit block 331 always maintains the positioning match with the limit slot 321, preventing the limit block 331 from falling off from the limit slot 321, thereby preventing the drive disc 1 and the steering wheel body 4 from falling off during use. When the drive disc 1 needs to be disassembled, pull up the positioning column 33 to separate the limit block 331 from the limit slot 321, and pull the first end of the clamping plate 32 out of the second through hole. The drive disc 1 is fixed to the steering wheel body 4 by multiple connecting members 3, which is firmly fixed and not easy to slip. The drive disc 1 drives the steering wheel body 4 to rotate with high precision and is easy to disassemble and assemble. The clamping plate 32 can be configured to be in a strip shape or a U shape. When the clamping plate 32 is configured to be in a U shape, preferably, the portion of the clamping plate 32 opposite to the connecting plate 31 can be configured to be in an arc shape to better match the steering wheel body 4. The clamping plate 32 can be made of plastic material or a protective layer can be provided inside the clamping plate 32 to prevent the steering wheel body 4 from being worn and to make the steering wheel body 4 more firmly clamped in the accommodating channel.

[0042] The present invention also provides an autonomous driving steering wheel drive system, comprising the autonomous driving steering wheel drive device described above, and also comprising a controller and a signal acquisition module, the signal acquisition module comprising an external environment information identification module and a vehicle status information identification module, the signal acquisition module and the drive component are both electrically connected to the controller; the controller comprises an information comparison module for comparing the vehicle's current position and the target position.

[0043] The external environment information recognition module collects external environment information, such as traffic signs, markings, targets, etc. The vehicle state information recognition module collects vehicle state information, such as GPS signals, etc. The signal acquisition module sends the collected external environment information and vehicle state information to the controller, and the controller determines the target position of the vehicle based on the received external environment information, vehicle state information and preset destination information. The information comparison module compares the current position of the vehicle with the target position, determines the angle at which the steering wheel needs to be turned when the vehicle travels from the current position to the target position, and the controller then sends the angle at which the steering wheel needs to be turned to the driving component, and the driving component drives the driving wheel 1 to rotate the required angle, and the driving wheel 1 drives the steering wheel body 4 to rotate, thereby completing the steering operation of the steering wheel and realizing the automatic driving operation of the steering wheel body 4.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic driving steering wheel drive device, characterized in that: It includes a driving plate, a driving mechanism and a connecting piece, wherein the driving plate is provided with a plurality of transmission teeth distributed along its circumference; the driving mechanism includes a gear and a driving component, wherein the gear is connected to the output shaft of the driving component through a transmission structure; the gear is meshed with the transmission teeth to transmit the driving plate to rotate in its circumferential direction; the connecting piece is used to detachably connect the driving plate to the steering wheel body.

2. The automatic driving steering wheel driving device according to claim 1, characterized in that: The driving mechanism also includes a first bracket, which is provided with a lifting roller and a stabilizing roller rotatably connected to the first bracket, the lifting roller abuts against the outer wall of the driving disk, and the stabilizing roller abuts against the inner wall of the driving disk, and the axes of the lifting roller and the stabilizing roller are parallel to the axis of the driving disk; the first bracket is provided with an avoidance hole, and the transmission shaft of the transmission structure passes through the avoidance hole and is connected to the gear.

3. The automatic driving steering wheel driving device according to claim 2, characterized in that: The first bracket is provided with a first accommodating hole, and a sliding groove extending radially along the driving disk is provided in the first accommodating hole. A slider is provided for sliding cooperation with the sliding groove, and the stabilizing roller is rotatably connected to the slider; a first spring is provided between the slider and the hole wall at the top of the sliding groove to push the slider to move in a direction away from the center of the driving disk.

4. The automatic driving steering wheel driving device according to claim 2, characterized in that: A support rod is arranged on the outer side of the first bracket.

5. The automatic driving steering wheel driving device according to claim 2, characterized in that: The driving mechanism also includes a second bracket, an adjusting screw and an auxiliary support rod, the second bracket and the first bracket are arranged opposite to each other relative to the center of the driving disk; an auxiliary roller is provided on the second bracket and is rotatably connected to the second bracket, the auxiliary roller abuts against the outer wall of the driving disk, and the axis of the auxiliary roller is parallel to the axis of the driving disk; the first bracket is provided with a first threaded hole and a first through hole, the first end of the adjusting screw is rotatably connected to the second bracket, and the second end is threadedly connected to the first threaded hole; the first end of the auxiliary support rod is fixedly connected to the second bracket, and the second end passes through the first through hole and is gap-matched with the first through hole; the adjusting screw and the auxiliary support rod are arranged in parallel.

6. The automatic driving steering wheel driving device according to claim 5, characterized in that: The first end of the auxiliary support rod is provided with an external thread, the second bracket is provided with a second threaded hole adapted to the external thread, the first through hole is a long hole extending along the circumferential direction of the driving disk, and the second threaded hole is a plurality of holes arranged along the circumferential direction of the driving disk.

7. The automatic driving steering wheel driving device according to claim 1, characterized in that: The size of the driving disc is larger than that of the steering wheel body; preferably, an auxiliary handle arranged opposite to it is provided on the front surface of the driving disc.

8. The automatic driving steering wheel driving device according to claim 1, characterized in that: The connecting member includes a connecting plate and a clamping plate, the first end of the connecting plate is connected to the driving disk, and the second end of the connecting plate extends toward the center of the driving disk; the connecting plate is provided with a second through hole and a third through hole distributed in its extension direction; the first end and the second end of the clamping plate pass through the second through hole and the third through hole respectively, and an accommodating channel for the steering wheel body to pass through is formed between the clamping plate and the connecting plate.

9. The automatic driving steering wheel driving device according to claim 8, characterized in that: The first end of the card plate is provided with a plurality of limit grooves, and the second end of the card plate is provided with a pull block, the size of the pull block is larger than the size of the third through hole; the driving disk is provided with a second accommodating hole that penetrates the driving disk and extends radially along the driving disk, and a positioning column is provided in the second accommodating hole, the first end of the positioning column can extend out of the driving disk, and the second end of the positioning column is provided with a limit block, and the limit block can be inserted into the limit groove; a partition is fixedly provided in the second accommodating hole, and a second spring is sleeved on the positioning column, the first end of the second spring abuts against the partition, and the second end abuts against the limit block.

10. An automatic driving steering wheel drive system, characterized in that: The automatic driving steering wheel drive device comprises the device as described in any one of claims 1 to 9, and also comprises a controller and a signal acquisition module, wherein the signal acquisition module comprises an external environment information recognition module and a vehicle status information recognition module, and the signal acquisition module and the drive component are both electrically connected to the controller; the controller comprises an information comparison module for comparing the current position of the vehicle with the target position.

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